Medical science has given names to thousands of diseases, and some of them sound more like supernatural curses than real diagnoses. With their strange qualities ranging from bizarre symptoms to horrifying conditions, these conditions could easily be mistaken for something dreamed up by a horror writer. After all, it is the real world that inspires the most chilling tales. As insomnia worsens over months, patients develop hallucinations, dementia, and loss of motor control before the condition ultimately proves fatal. IMDbNecrotizing FasciitisOften called the “flesh-eating disease,” necrotizing fasciitis is a rapidly spreading bacterial infection that destroys soft tissue.